Came up with this in a random moment's silliness, and that led to my ongoing Toonacy series.
(Sylvester says)
I lay so still upon the box
When really I was stalking
Playing it crafty as a fox
To stop that damned bird squawking
(Tweety Pie says)
I tawt I taw a putty tat
Asleep atop the telly
I moved in for a closer look
And wound up in his belly!